4WG-18752-51037 · OpenVSafe

Timeline

Registration Vaccinations Survey responses Call reports Cases without a report Call attempts Call successful Pregnancy survey

2021-04-28
Dose 1 — Pfizer-BioNTech
2021-05-06
Registered in v-safe
2021-05-06
Survey response — day 7, dose 1
MedDRA: Pre-existing disease — Feeling: Fair · Fatigue or tiredness, Diarrhea · Be unable to work, Be unable to do your normal daily activities

Free text: I have small bowel cancer which causes probably all my symptoms. I don't think the vaccine has caused any problems.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-12
Survey response — day 14, dose 1
MedDRA: Pre-existing disease — Feeling: Poor · Be unable to work, Be unable to do your normal daily activities

Free text: I think I feel worse due to my cancer and not from the vaccine. I have back pain, headaches, and extreme fatigue, all of which I had before I got the vaccine. I probably should not have signed up for this.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-19
Dose 2 — Pfizer-BioNTech
2021-05-19
Survey response — day 0, dose 2
MedDRA: Unevaluable event — Feeling: Poor · Headache, Muscle or body aches, Fatigue or tiredness, Nausea, Diarrhea · Be unable to work, Be unable to do your normal daily activities

Free text: I'm pretty sure that all my symptoms are from my cancer

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-20
Survey response — days 1–6 daily, dose 2
MedDRA: Pre-existing disease — Feeling: Poor · Site: Pain, Redness · Headache, Muscle or body aches, Fatigue or tiredness, Nausea · Be unable to work, Be unable to do your normal daily activities

Free text: My symptoms are probably from my cancer

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-22
Survey response — days 1–6 daily, dose 2
MedDRA: Adverse reaction, Pre-existing disease — Feeling: Poor · Headache, Muscle or body aches, Fatigue or tiredness, Nausea · Be unable to work, Be unable to do your normal daily activities

Free text: Symptoms probably due to cancer

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-28	Pfizer-BioNTech
2	2021-05-19	Pfizer-BioNTech

Free text

Release 8 — day 7, dose 1

2021-05-06

Systemic reaction (other): I have small bowel cancer which causes probably all my symptoms. I don't think the vaccine has caused any problems.

Release 8 — day 14, dose 1

2021-05-12

Symptoms: I think I feel worse due to my cancer and not from the vaccine. I have back pain, headaches, and extreme fatigue, all of which I had before I got the vaccine. I probably should not have signed up for this.

Release 8 — day 0, dose 2

2021-05-19

Systemic reaction (other): I'm pretty sure that all my symptoms are from my cancer

Release 8 — days 1–6 daily, dose 2

2021-05-20

Systemic reaction (other): My symptoms are probably from my cancer

2021-05-22

Systemic reaction (other): Symptoms probably due to cancer

Each entry is dated by the survey it was written in (the CDC re-sent the releases with survey dates in 2025); click a date to see that survey response. The CDC cut some text off at about 250 characters: symptoms in every release, and the other two fields in releases 9-12. Those entries are marked "cut off by CDC".

MedDRA terms by release

Field	Preferred term	2021-09	2023-04	2024-11
SD	Pre-existing disease	✓	✓	✓
SRO	Adverse reaction	✓	✓	✓
SRO	Pre-existing disease	✓	✓	✓
SRO	Unevaluable event	✓	✓	✓

✓ active code · ○ coded but marked inactive · blank = not in that release